[core] fix(Popover): return focus to target on ESC keypress

[adidahiya]

Changes proposed in this pull request:

• fix(Popover): improve keyboard a11y: always return focus to target element when an ESC keypress closes the popover

Reviewers should focus on:

Updated behavior in docs example.

Note that we need to be conservative here and not enable this behavior for all keyboard interactions because there may be some interactions where a confirmation action (e.g. "Enter" key) on a "popover dismiss element" (like a MenuItem) pulls the user's focus away from the popover, and we don't want to break that kind of functionality.

Screenshot

Returns focus on ESC key:

Does not return focus (previous behavior) on Enter key:

[adidahiya]

[core] fix(Popover): return focus to target on ESC keypress

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.

[adidahiya]

revert rename typo

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.